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(No Model.)

. D. D. VOLKMAN'N & W. P. PEDDYOORD.

PIPE WRENCH.

Patented May 27, 1884.

INVENTOR: 6. 2%. m

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UNITED STATES PATENT OFFICE...

CONRAD 1). VOLKMANN AND WILLIAM F. PEDDYOORD, or NAPPANEE, IND.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 299,440, dated May 27, 1884.

Application filed January 18, 1884. (No model.) I

To aZZ whom it may concern:

Be it known that we, CONRAD D. VOLK- MANN and WILLIAM F; PEDDYOORD, citizens of the United States, residing at Nappanee, in the county of Elkhart and State of Indiana, have invented certain new and useful Improvements in Piperenches, of which the following is a description.

This invention relates to that class of pipewrenches in whicha toothed body-piece is opposed by a self-adjusting hook; and it has .for its object to provide means whereby'thdi,

wrench is made strong and reliable, and suitable for use on both large and small pipes, and adaptable to take hold of short pipe-nipples.

To this end our invention consists in a curved-ended bar provided with sharp teeth, and a pair of hooks separably secured together hung on said bar, as hereinafter described and claimed, reference being had to the accompanying drawings, in which Figure l is a side elevation of our wrench, with the two hooks secured together to act as a single hook. Fig. 2 is a similar side elevation showing the hooks separated and one of them in use, and Fig. 3 is an edge view showing the hooks separated.

A represents the body of the wrench, consisting of a bar of steel, curved and provided with teeth 0 near its forward end, and hav-. ing two or more holes, D, to receive a bolt, E, on which two hooks, F, are pivoted. Each of these hooks has a projection, G, on its inner face one-half as thick as the bar A, forming thickened ends, as shown in Figs. 2 and 3, whereby the bodies of the hooks will be kept separate to admit the bar A- between them, while the said thickened ends are firmly secured together by a dowel, J, and a screw,

In general use, the wrench will have its hooks screwed together, as in Fig. 1; but to enable the wrench to be used in places too thin to receive the united hooks, and to enable it to take hold of very short nipples or pipe ends, we provide the thickened ends G and the removable screw K. By removing the screw K the two hooks may be separated, the bolt E being loose enough to permit the dowel J, which is permanently fixed in one hook, to be withdrawn from the 11016 b in the other hook. (Shown by a dotted circle, Fig.

' 2.) When the hooks are thus separated, either one may be used, according as it is desired to turn the pipe to the right or left, and the other hook be allowed to swing freely. The shoulder c of projection G is curved, as shown in Fig. 2; to prevent the hook when free from swinging over the end f of the body A, as such swinging over would bring it in the workmans way. Each hook is sharpened and hardened at its point e, to assist the teeth' 0 in holding large pipes, as in Fig. 1, L representing a pipe. The face d of each hook is in a plane tangent to the are '9 at a, this arc being the trace of the end f when bar A is revolved on bolt E, the hook being stationary. The curve h joins the face (1 nearly at a right angle, and the curve of the bar A along the teeth 0 bears such a relation to the curve h, the face d, and the edge e that pipes of different sizes will all be held resting between three points, and that one of teeth 0 will bear on thepipe, which is centrally opposite the angle d h, thus holding the pipe to the greatest advantage. The projection G forms a portion of face (I, bringing this portion of each hook directly opposite to teeth 0, thereby avoiding the twisting effect that. would result from the use of either one of two independent hooks, which do not have this projection J. This is an important feature, for we find that the slight looseness of bolt E in its holes allows the hooks F to twist enough to hang almost across the thickness of the bar A opposite to teeth 0, thereby taking a hold on both sides of a pipe equal to the thickness of said bar. WVhen the bolt E is changed into different holes D in the bar A, the relation of the parts is but little changed.

The handle B may be of any suitable form.

What we claim as our invention, and wish to secure by Letters Patent, is

1. The combination, with bar A, having the curve provided with teeth 0, of the two independent hooks F, each provided with the projection G, substantially as described, whereby each face (1 is extended in front of teeth 0, for the purpose specified.

2. The, combination, with the bar A, having teeth 0, of the two independent hooks F, prevented from swinging past the point of the each provided with the projection G, the dowel bar, for the purpose specified. J, and the reni ovable screw K, as and for the CONRAD D VOLKMANN purpose speci ied. i

5 3. The combination, with the bar A, hav- W ILLIAM lEDDYC/ORD' ing teeth 0, of the hooks F, pivoted thereto, Vitnesses: having projections G, each extended at c, as JOHN D. OUPPES, shown and described, whereby the hooks are LEVI R. STooKEY. 

